RBCS What is RBCs explain combine RBCs (Red Blood Cells) are the most common blood cells in the human body. They are also called erythrocytes. Their main job is to carry oxygen from the lungs to all body tissues and bring carbon dioxide back to the lungs for removal. Structure of RBCs Shape: Biconcave disc (thin in the center, thick at edges) Color: Red due to hemoglobin Nucleus: Mature RBCs do not have a nucleus Flexible: Can pass through tiny capillaries easily Main Functions Transport oxygen Hemoglobin inside RBCs binds oxygen in the lungs and delivers it to tissues. Transport carbon dioxide RBCs help carry carbon dioxide from tissues back to the lungs. Maintain acid-base balance Help keep blood pH normal. Hemoglobin Hemoglobin is the iron-containing protein inside RBCs. Hb+O 2 ⇌HbO 2 This equation shows hemoglobin combining with oxygen to form oxyhemoglobin. Formation of RBCs Produced in the bone marrow Process called erythropoiesis Stimulated by the hormone erythropoietin from the kidneys Life Span RBCs live about 120 days Old RBCs are destroyed mainly in the spleen and liver Normal RBC Count Male: about 4.5–5.9 million cells/µL Female: about 4.1–5.1 million cells/µL Low RBCs Low RBC count causes anemia. Symptoms: Weakness Fatigue Pale skin Shortness of breath High RBCs High RBC count is called polycythemia. It may occur due to: Dehydration Smoking High altitude Certain diseases Simple Combined Definition RBCs are hemoglobin-containing blood cells made in bone marrow that transport oxygen to body tissues and carry carbon dioxide back to the lungs. #RBCs #RedBloodCells #Erythrocytes #Hemoglobin #BloodCells #Anemia #MedicalStudent #MedSchool #Nursing #Healthcare #Biology #HumanBody #MedicalEducation #LabScience #OxygenTransport #BloodCirculation #Pathology #MedTok #LearnMedicine #MedicalKnowledge #DoctorLife #NurseLife #StudyMedicine #Viral #FYP #ForYou #TikTokMedical #MedicalFacts #HealthEducation #ViralTags - @amhbhaiofficial